package com.lishuai.test4;

import java.util.Arrays;

public class Exam4 {

	public static void main(String[] args) {
		// 局部变量
		int i = 1;
		String str = "hello";
		Integer num = 200;
		int[] arr = { 1, 2, 3, 4, 5 };
		MyData my = new MyData();

		change(i, str, num, arr, my);

		System.out.println("i = " + i);
		System.out.println("str = " + str);
		System.out.println("num = " + num);
		System.out.println("arr = " + Arrays.toString(arr));
		System.out.println("my.a = " + my.a);
	}

	public static void change(int j, String s, Integer n, int[] a, MyData m) {
		j += 1;
		s += "world";
		n += 1;
		a[0] += 1;
		m.a += 1;
	}
}

class MyData {
	int a = 10;
}
